Home / 87,786.32-121,144.73-47,500.79

Finding the Fourth Proportional to 87,786.32, 121,144.73 and 47,500.79

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Solution

The fourth proportional to 87,786.32, 121,144.73 and 47,500.79 is: 65,550.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,786.32 : 121,144.73 = 47,500.79 : x
  2. Step 2: Convert to fraction form
    87,786.32/121,144.73 = 47,500.79/x
  3. Step 3: Cross multiply
    87,786.32x = 121,144.73 × 47,500.79
  4. Step 4: Simplify right side
    87,786.32x = 5,754,470,800.95
  5. Step 5: Solve for x
    x = 5,754,470,800.95/87,786.32
  6. Step 6: Final answer
    x = 65,550.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.